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A simle map of the towns in the Province of Ferrara, Italy. Following this work: http://bl.ocks.org/d3noob/9267535
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<html> | |
<head> | |
<title>Come fare una mappa con D3.js e Leaflet.js</title> | |
<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.7/leaflet.css" /> | |
<script src="http://d3js.org/d3.v3.min.js"></script> | |
<script src="http://cdn.leafletjs.com/leaflet-0.7/leaflet.js"></script> | |
<style type="text/css"> | |
#map {width: 600px; | |
height: 400px; | |
padding:0px; | |
border:0px; | |
margin:0px; | |
float:left; | |
} | |
#infowindow {color:white; | |
font-size: 15px; | |
font-family:sans-serif; | |
border:0px; | |
padding:0px} | |
.d3-tip { | |
line-height: 1; | |
font-weight: bold; | |
padding: 12px; | |
background: rgba(0, 0, 0, 0.8); | |
color: #fff; | |
border-radius: 5px; | |
} | |
.d3-tip.n:after { | |
margin: -1px 0 0 0; | |
top: 100%; | |
left: 0; | |
} | |
</style> | |
</head> | |
<body> | |
<div id="map"></div> | |
<script src="http://labratrevenge.com/d3-tip/javascripts/d3.tip.v0.6.3.js"></script> | |
<script type="text/javascript"> | |
var map = L.map('map').setView([44.8170555, 11.8957962], 9); | |
mapLink = | |
'<a href="http://openstreetmap.org">OpenStreetMap</a>'; | |
L.tileLayer( | |
'http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', { | |
attribution: '© ' + mapLink + ' Contributors', | |
maxZoom: 18, | |
}).addTo(map); | |
map._initPathRoot() | |
var url = 'http://localhost:8888/comuni_fe.geojson'; | |
var svg = d3.select("#map").select("svg"), | |
g = svg.append("g"); | |
d3.json(url, function(collection) { | |
collection.features.forEach(function(d) { | |
d.LatLng = new L.LatLng(d.geometry.coordinates[1], | |
d.geometry.coordinates[0] | |
)}); | |
var tip = d3.tip() | |
.attr('class', 'd3-tip') | |
.offset([-115, -165]) | |
.html(function(d) { | |
console.log(d); | |
return "<span id='infowindow'>"+JSON.stringify(d.properties.denominazione) + "</span>"; | |
}); | |
var punti = g.selectAll("circle") | |
.data(collection.features) | |
.enter().append("circle") | |
.style("stroke", "#8B0000") | |
.style("opacity", .6) | |
.style("fill", "red") | |
.attr("r", 20) | |
.on("mouseover",tip.show) | |
.on("mouseout", tip.hide) | |
.call(tip); | |
map.on("viewreset", update); | |
update(); | |
function update() { | |
punti.attr("transform", | |
function(d) { | |
return "translate("+ | |
map.latLngToLayerPoint(d.LatLng).x +","+ | |
map.latLngToLayerPoint(d.LatLng).y +")"; | |
} | |
) | |
} | |
}) | |
</script> | |
</body> | |
</html> |
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